Planet Earth
International Astronomical Union WGSN

IAU: Triangulum

Profile / Characteristics

English translationLatin declination and pronunciationsSize/ °²# stars
the TriangleTriangulum – try-ANG-gyuh-lum
Trianguli – try-ANG-gyuh-lye

Ancient Globes

Farnese Globe

Kugel Globe

Mainz Globe



Ancient Lore & Meaning


English translation by Douglas Kidd (1997).
Aratus: Phaenomena, Cambridge Classical Texts and Commentaries, Series Number 34

Online available: translation by Mair (1921) 


it is the letter Delta, the initial lettre of the term Dios, the name of Zeus. Some say that it represents the shape of Egypt.

French translation by:
Jordi Pàmias i Massana and Arnaud Zucker (2013). Ératosthènes de Cyrène – Catastérismes, Les Belles Lettres, Paris

English version in:
Robin Hard (2015): Eratosthenes and Hyginus Constellation Myths with Aratus’s Phaenomena, Oxford World’s Classics

Early Modern Interpretation


As one of their first tasks in the 1920s, the newly founded International Astronomical Union (IAU) established constellation standards. The Belgian astronomer Eugène Delporte was assigned to the task to define borders of constellations parallel to lines of declination and right ascension. They were accepted by the General Assembly in 1928. The standardized names and abbreviations had already been accepted in 1922 and 1925.  

Generated by MPG